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1 /* Router advertisement
2 * Copyright (C) 1999 Kunihiro Ishiguro
4 * This file is part of GNU Zebra.
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with GNU Zebra; see the file COPYING. If not, write to the Free
18 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
22 #ifndef _ZEBRA_SOCKOPT_H
23 #define _ZEBRA_SOCKOPT_H
25 #include "sockunion.h"
27 extern int setsockopt_so_recvbuf (int sock
, int size
);
28 extern int setsockopt_so_sendbuf (const int sock
, int size
);
29 extern int getsockopt_so_sendbuf (const int sock
);
32 extern int setsockopt_ipv6_pktinfo (int, int);
33 extern int setsockopt_ipv6_checksum (int, int);
34 extern int setsockopt_ipv6_multicast_hops (int, int);
35 extern int setsockopt_ipv6_unicast_hops (int, int);
36 extern int setsockopt_ipv6_hoplimit (int, int);
37 extern int setsockopt_ipv6_multicast_loop (int, int);
38 extern int setsockopt_ipv6_tclass (int, int);
39 #endif /* HAVE_IPV6 */
42 * It is OK to reference in6_pktinfo here without a protecting #if
43 * because this macro will only be used #if HAVE_IPV6, and in6_pktinfo
44 * is not optional for HAVE_IPV6.
46 #define SOPT_SIZE_CMSG_PKTINFO_IPV6() (sizeof (struct in6_pktinfo));
49 * Size defines for control messages used to get ifindex. We define
50 * values for each method, and define a macro that can be used by code
51 * that is unaware of which method is in use.
52 * These values are without any alignment needed (see CMSG_SPACE in RFC3542).
54 #if defined (IP_PKTINFO)
55 /* Linux in_pktinfo. */
56 #define SOPT_SIZE_CMSG_PKTINFO_IPV4() (CMSG_SPACE(sizeof (struct in_pktinfo)))
57 /* XXX This should perhaps be defined even if IP_PKTINFO is not. */
58 #define SOPT_SIZE_CMSG_PKTINFO(af) \
59 ((af == AF_INET) ? SOPT_SIZE_CMSG_PKTINFO_IPV4() \
60 : SOPT_SIZE_CMSG_PKTINFO_IPV6()
61 #endif /* IP_PKTINFO */
63 #if defined (IP_RECVIF)
67 #define SOPT_SIZE_CMSG_RECVIF_IPV4() (sizeof (uint_t))
69 #define SOPT_SIZE_CMSG_RECVIF_IPV4() (sizeof (struct sockaddr_dl))
71 #endif /* IP_RECVIF */
73 /* SOPT_SIZE_CMSG_IFINDEX_IPV4 - portable type */
74 #if defined (SOPT_SIZE_CMSG_PKTINFO)
75 #define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_PKTINFO_IPV4()
76 #elif defined (SOPT_SIZE_CMSG_RECVIF_IPV4)
77 #define SOPT_SIZE_CMSG_IFINDEX_IPV4() SOPT_SIZE_CMSG_RECVIF_IPV4()
78 #else /* Nothing available */
79 #define SOPT_SIZE_CMSG_IFINDEX_IPV4() (sizeof (char *))
80 #endif /* SOPT_SIZE_CMSG_IFINDEX_IPV4 */
82 #define SOPT_SIZE_CMSG_IFINDEX(af) \
83 (((af) == AF_INET) : SOPT_SIZE_CMSG_IFINDEX_IPV4() \
84 ? SOPT_SIZE_CMSG_PKTINFO_IPV6())
86 extern int setsockopt_ipv4_multicast_if(int sock
, struct in_addr if_addr
,
88 extern int setsockopt_ipv4_multicast(int sock
, int optname
,
89 struct in_addr if_addr
,
90 unsigned int mcast_addr
,
92 extern int setsockopt_ipv4_tos(int sock
, int tos
);
94 /* Ask for, and get, ifindex, by whatever method is supported. */
95 extern int setsockopt_ifindex (int, int, ifindex_t
);
96 extern ifindex_t
getsockopt_ifindex (int, struct msghdr
*);
98 /* swab the fields in iph between the host order and system order expected
101 extern void sockopt_iphdrincl_swab_htosys (struct ip
*iph
);
102 extern void sockopt_iphdrincl_swab_systoh (struct ip
*iph
);
104 extern int sockopt_tcp_rtt (int);
105 extern int sockopt_tcp_signature(int sock
, union sockunion
*su
,
106 const char *password
);
107 #endif /*_ZEBRA_SOCKOPT_H */